/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:05:09,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:05:09,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:05:09,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:05:09,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:05:09,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:05:09,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:05:09,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:05:09,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:05:09,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:05:09,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:05:09,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:05:09,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:05:09,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:05:09,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:05:09,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:05:09,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:05:09,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:05:09,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:05:09,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:05:09,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:05:09,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:05:09,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:05:09,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:05:10,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 15:05:10,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 15:05:10,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 15:05:10,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 15:05:10,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 15:05:10,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 15:05:10,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:05:10,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:05:10,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:05:10,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:05:10,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:05:10,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:05:10,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:05:10,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:05:10,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:05:10,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:05:10,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:05:10,025 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-11 15:05:10,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:05:10,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:05:10,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:05:10,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:05:10,070 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:05:10,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:05:10,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:05:10,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:05:10,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:05:10,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:05:10,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:05:10,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:05:10,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:05:10,073 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:05:10,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:05:10,073 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:05:10,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:05:10,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:05:10,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:05:10,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:05:10,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:05:10,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:05:10,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:05:10,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:05:10,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:05:10,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:05:10,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:05:10,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:05:10,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:05:10,076 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:05:10,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:05:10,539 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:05:10,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:05:10,548 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:05:10,548 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:05:10,550 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-09-11 15:05:10,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23cd3b406/d2e2cf7b788f4464b670588e6e5bb8f9/FLAG592ca5997 [2020-09-11 15:05:11,247 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:05:11,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-09-11 15:05:11,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23cd3b406/d2e2cf7b788f4464b670588e6e5bb8f9/FLAG592ca5997 [2020-09-11 15:05:11,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23cd3b406/d2e2cf7b788f4464b670588e6e5bb8f9 [2020-09-11 15:05:11,482 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:05:11,486 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:05:11,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:05:11,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:05:11,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:05:11,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:05:11" (1/1) ... [2020-09-11 15:05:11,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@463c989b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:11, skipping insertion in model container [2020-09-11 15:05:11,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:05:11" (1/1) ... [2020-09-11 15:05:11,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:05:11,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:05:12,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:05:12,199 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:05:12,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:05:12,345 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:05:12,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:12 WrapperNode [2020-09-11 15:05:12,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:05:12,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:05:12,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:05:12,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:05:12,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:12" (1/1) ... [2020-09-11 15:05:12,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:12" (1/1) ... [2020-09-11 15:05:12,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:05:12,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:05:12,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:05:12,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:05:12,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:12" (1/1) ... [2020-09-11 15:05:12,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:12" (1/1) ... [2020-09-11 15:05:12,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:12" (1/1) ... [2020-09-11 15:05:12,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:12" (1/1) ... [2020-09-11 15:05:12,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:12" (1/1) ... [2020-09-11 15:05:12,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:12" (1/1) ... [2020-09-11 15:05:12,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:12" (1/1) ... [2020-09-11 15:05:12,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:05:12,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:05:12,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:05:12,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:05:12,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:05:12,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:05:12,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:05:12,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:05:12,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:05:12,535 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:05:12,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:05:12,536 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:05:12,536 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:05:12,536 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:05:12,536 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:05:12,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:05:12,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:05:12,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:05:12,545 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 15:05:12,959 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:05:12,959 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:05:12,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:05:12 BoogieIcfgContainer [2020-09-11 15:05:12,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:05:12,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:05:12,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:05:12,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:05:12,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:05:11" (1/3) ... [2020-09-11 15:05:12,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629d9720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:05:12, skipping insertion in model container [2020-09-11 15:05:12,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:12" (2/3) ... [2020-09-11 15:05:12,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629d9720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:05:12, skipping insertion in model container [2020-09-11 15:05:12,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:05:12" (3/3) ... [2020-09-11 15:05:12,974 INFO L109 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2020-09-11 15:05:12,986 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:05:12,986 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:05:12,997 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:05:12,998 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:05:13,030 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,030 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,030 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,031 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,031 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,031 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,032 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,032 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,032 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,033 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,033 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,033 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,034 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,034 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,034 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,034 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,035 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,035 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,040 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,040 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,040 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,041 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,049 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,049 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,054 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,055 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:13,080 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 15:05:13,108 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:05:13,108 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:05:13,108 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:05:13,109 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:05:13,109 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:05:13,109 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:05:13,109 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:05:13,109 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:05:13,128 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-11 15:05:13,130 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 15:05:13,178 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 15:05:13,178 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:05:13,184 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 15:05:13,188 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 15:05:13,218 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 15:05:13,219 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:05:13,220 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 15:05:13,221 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 15:05:13,223 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:05:15,132 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-09-11 15:05:15,132 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-11 15:05:15,138 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 15:05:15,180 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 15:05:15,182 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 15:05:15,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 15:05:15,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:05:15,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:05:15,200 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:05:15,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:05:15,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-09-11 15:05:15,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:05:15,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331074534] [2020-09-11 15:05:15,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:05:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:05:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:05:15,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331074534] [2020-09-11 15:05:15,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:05:15,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:05:15,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588810954] [2020-09-11 15:05:15,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:05:15,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:05:15,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:05:15,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:05:15,510 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 15:05:15,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:05:15,557 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-11 15:05:15,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:05:15,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 15:05:15,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:05:15,578 INFO L225 Difference]: With dead ends: 282 [2020-09-11 15:05:15,578 INFO L226 Difference]: Without dead ends: 218 [2020-09-11 15:05:15,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:05:15,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-11 15:05:15,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-11 15:05:15,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-11 15:05:15,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-11 15:05:15,666 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-11 15:05:15,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:05:15,668 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-11 15:05:15,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:05:15,668 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-11 15:05:15,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:05:15,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:05:15,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:05:15,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:05:15,673 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:05:15,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:05:15,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-09-11 15:05:15,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:05:15,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691572921] [2020-09-11 15:05:15,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:05:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:05:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:05:15,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691572921] [2020-09-11 15:05:15,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:05:15,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:05:15,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050385447] [2020-09-11 15:05:15,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:05:15,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:05:15,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:05:15,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:05:15,844 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-11 15:05:15,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:05:15,902 INFO L93 Difference]: Finished difference Result 290 states and 762 transitions. [2020-09-11 15:05:15,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:05:15,909 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 15:05:15,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:05:15,914 INFO L225 Difference]: With dead ends: 290 [2020-09-11 15:05:15,915 INFO L226 Difference]: Without dead ends: 164 [2020-09-11 15:05:15,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:05:15,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-11 15:05:15,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-09-11 15:05:15,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-11 15:05:15,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 424 transitions. [2020-09-11 15:05:15,941 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 424 transitions. Word has length 9 [2020-09-11 15:05:15,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:05:15,942 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 424 transitions. [2020-09-11 15:05:15,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:05:15,942 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 424 transitions. [2020-09-11 15:05:15,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:05:15,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:05:15,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:05:15,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:05:15,945 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:05:15,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:05:15,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1379691760, now seen corresponding path program 1 times [2020-09-11 15:05:15,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:05:15,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037105960] [2020-09-11 15:05:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:05:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:05:16,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:05:16,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037105960] [2020-09-11 15:05:16,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:05:16,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:05:16,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20557960] [2020-09-11 15:05:16,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:05:16,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:05:16,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:05:16,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:05:16,025 INFO L87 Difference]: Start difference. First operand 164 states and 424 transitions. Second operand 4 states. [2020-09-11 15:05:16,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:05:16,066 INFO L93 Difference]: Finished difference Result 244 states and 582 transitions. [2020-09-11 15:05:16,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:05:16,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-11 15:05:16,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:05:16,069 INFO L225 Difference]: With dead ends: 244 [2020-09-11 15:05:16,069 INFO L226 Difference]: Without dead ends: 128 [2020-09-11 15:05:16,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:05:16,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-11 15:05:16,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2020-09-11 15:05:16,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-11 15:05:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 268 transitions. [2020-09-11 15:05:16,078 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 268 transitions. Word has length 11 [2020-09-11 15:05:16,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:05:16,079 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 268 transitions. [2020-09-11 15:05:16,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:05:16,079 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 268 transitions. [2020-09-11 15:05:16,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:05:16,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:05:16,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:05:16,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:05:16,081 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:05:16,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:05:16,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-09-11 15:05:16,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:05:16,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707720372] [2020-09-11 15:05:16,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:05:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:05:16,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:05:16,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707720372] [2020-09-11 15:05:16,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:05:16,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:05:16,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622447333] [2020-09-11 15:05:16,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:05:16,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:05:16,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:05:16,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:05:16,184 INFO L87 Difference]: Start difference. First operand 116 states and 268 transitions. Second operand 4 states. [2020-09-11 15:05:16,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:05:16,207 INFO L93 Difference]: Finished difference Result 140 states and 310 transitions. [2020-09-11 15:05:16,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:05:16,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-11 15:05:16,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:05:16,209 INFO L225 Difference]: With dead ends: 140 [2020-09-11 15:05:16,209 INFO L226 Difference]: Without dead ends: 68 [2020-09-11 15:05:16,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:05:16,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-11 15:05:16,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-11 15:05:16,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-11 15:05:16,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-09-11 15:05:16,217 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 11 [2020-09-11 15:05:16,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:05:16,218 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-09-11 15:05:16,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:05:16,218 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-09-11 15:05:16,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:05:16,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:05:16,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:05:16,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:05:16,219 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:05:16,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:05:16,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-09-11 15:05:16,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:05:16,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217773883] [2020-09-11 15:05:16,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:05:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:05:16,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:05:16,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217773883] [2020-09-11 15:05:16,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:05:16,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:05:16,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988819022] [2020-09-11 15:05:16,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:05:16,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:05:16,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:05:16,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:05:16,326 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-09-11 15:05:16,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:05:16,364 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-09-11 15:05:16,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:05:16,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 15:05:16,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:05:16,366 INFO L225 Difference]: With dead ends: 81 [2020-09-11 15:05:16,366 INFO L226 Difference]: Without dead ends: 59 [2020-09-11 15:05:16,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:05:16,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-11 15:05:16,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-11 15:05:16,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-11 15:05:16,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-09-11 15:05:16,371 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-09-11 15:05:16,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:05:16,371 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-09-11 15:05:16,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:05:16,372 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-09-11 15:05:16,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:05:16,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:05:16,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:05:16,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:05:16,373 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:05:16,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:05:16,374 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-09-11 15:05:16,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:05:16,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887884443] [2020-09-11 15:05:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:05:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:05:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:05:16,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887884443] [2020-09-11 15:05:16,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:05:16,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:05:16,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667306790] [2020-09-11 15:05:16,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:05:16,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:05:16,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:05:16,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:05:16,471 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-09-11 15:05:16,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:05:16,511 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-09-11 15:05:16,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:05:16,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-11 15:05:16,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:05:16,513 INFO L225 Difference]: With dead ends: 60 [2020-09-11 15:05:16,513 INFO L226 Difference]: Without dead ends: 45 [2020-09-11 15:05:16,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:05:16,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-11 15:05:16,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-11 15:05:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-11 15:05:16,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-09-11 15:05:16,517 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-09-11 15:05:16,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:05:16,517 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-09-11 15:05:16,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:05:16,517 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-09-11 15:05:16,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:05:16,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:05:16,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:05:16,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:05:16,519 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:05:16,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:05:16,519 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-09-11 15:05:16,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:05:16,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136819018] [2020-09-11 15:05:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:05:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:05:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:05:16,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136819018] [2020-09-11 15:05:16,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:05:16,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:05:16,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363181603] [2020-09-11 15:05:16,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:05:16,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:05:16,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:05:16,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:05:16,633 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-09-11 15:05:16,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:05:16,711 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-09-11 15:05:16,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:05:16,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-11 15:05:16,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:05:16,713 INFO L225 Difference]: With dead ends: 42 [2020-09-11 15:05:16,713 INFO L226 Difference]: Without dead ends: 36 [2020-09-11 15:05:16,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:05:16,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-11 15:05:16,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-11 15:05:16,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-11 15:05:16,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-11 15:05:16,716 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-09-11 15:05:16,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:05:16,716 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-11 15:05:16,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:05:16,717 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-11 15:05:16,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 15:05:16,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:05:16,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:05:16,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:05:16,718 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:05:16,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:05:16,718 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-09-11 15:05:16,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:05:16,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375092791] [2020-09-11 15:05:16,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:05:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:05:16,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:05:16,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375092791] [2020-09-11 15:05:16,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:05:16,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:05:16,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008169108] [2020-09-11 15:05:16,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:05:16,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:05:16,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:05:16,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:05:16,787 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-09-11 15:05:16,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:05:16,803 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-11 15:05:16,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:05:16,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 15:05:16,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:05:16,804 INFO L225 Difference]: With dead ends: 35 [2020-09-11 15:05:16,804 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:05:16,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:05:16,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:05:16,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:05:16,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:05:16,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:05:16,805 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 15:05:16,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:05:16,806 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:05:16,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:05:16,806 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:05:16,806 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:05:16,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:05:16,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:05:16 BasicIcfg [2020-09-11 15:05:16,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:05:16,815 INFO L168 Benchmark]: Toolchain (without parser) took 5330.32 ms. Allocated memory was 139.5 MB in the beginning and 247.5 MB in the end (delta: 108.0 MB). Free memory was 101.7 MB in the beginning and 141.4 MB in the end (delta: -39.7 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:05:16,816 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:05:16,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 858.74 ms. Allocated memory was 139.5 MB in the beginning and 205.5 MB in the end (delta: 66.1 MB). Free memory was 101.0 MB in the beginning and 163.0 MB in the end (delta: -62.0 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-09-11 15:05:16,817 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.81 ms. Allocated memory is still 205.5 MB. Free memory was 163.0 MB in the beginning and 160.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-09-11 15:05:16,818 INFO L168 Benchmark]: Boogie Preprocessor took 42.96 ms. Allocated memory is still 205.5 MB. Free memory was 160.8 MB in the beginning and 159.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:05:16,819 INFO L168 Benchmark]: RCFGBuilder took 508.90 ms. Allocated memory is still 205.5 MB. Free memory was 159.5 MB in the beginning and 137.0 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-11 15:05:16,820 INFO L168 Benchmark]: TraceAbstraction took 3845.92 ms. Allocated memory was 205.5 MB in the beginning and 247.5 MB in the end (delta: 41.9 MB). Free memory was 136.3 MB in the beginning and 141.4 MB in the end (delta: -5.0 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2020-09-11 15:05:16,825 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 858.74 ms. Allocated memory was 139.5 MB in the beginning and 205.5 MB in the end (delta: 66.1 MB). Free memory was 101.0 MB in the beginning and 163.0 MB in the end (delta: -62.0 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.81 ms. Allocated memory is still 205.5 MB. Free memory was 163.0 MB in the beginning and 160.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.96 ms. Allocated memory is still 205.5 MB. Free memory was 160.8 MB in the beginning and 159.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 508.90 ms. Allocated memory is still 205.5 MB. Free memory was 159.5 MB in the beginning and 137.0 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3845.92 ms. Allocated memory was 205.5 MB in the beginning and 247.5 MB in the end (delta: 41.9 MB). Free memory was 136.3 MB in the beginning and 141.4 MB in the end (delta: -5.0 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 669 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 145 SDtfs, 140 SDslu, 178 SDs, 0 SdLazy, 112 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...